i
If you switch off the engine at a low
outside temperature and add DEF, restart
the engine after refueling. If you leave the
vehicle parked withou trestarting the
engin eand the DEF freeze sin the DEF tank,
the on-board compute rwill only be able to
register the new fill level after a defrosting
period of up to 60 minutes. During this
time, you may not be able to start the
engine.
You will find further information on DE Finthe
"Service products" section (Y page 317).
Refueling procedure DEF filler neck in the engine compartment
X
Remove the key from the ignition lock.
X Switch off the auxiliary heating system
(Y page 125).
X Open the hood.
X Close all vehicle doors so that no ammonia
vapors can enter the vehicle.
i Do not inhale any ammonia vapor which
may escape when you unscrew cap 0005.
Ammonia vapors have a pungent odor.
However, they are neither toxic nor
hazardous to health in this concentration.
X Turn cap 0005counter-clockwise and remove
it.
X Only fill up the DEF tank until the DEF level
is visible in the filler neck.
X Replace DEF filler neck cap 0005on the filler
neck and turn clockwise. You will hear a click when cap
0005is fully
closed.
DEF filler neck on the right-hand vehicle
side The DEF reservoir on the right-hand side of the
vehicle (example: Chassis Cab)
Fuel filler cap
X
Remove the key from the ignition lock.
X Switch off the auxiliary heating system
(Y page 125).
X Remove tool 0023for unlocking tank filler
cap 0006from the footwell on the co-driver's
side (Y page 264).
X Close all vehicle doors so that no ammonia
vapors can enter the vehicle.
X Pull cover 0025up, turn 90° and release.
X Insert tool 0023into hole 0026of tank filler
cap 0006.
i Do not inhale any ammonia vapor that
may escape when you unscrew tank filler
cap 0006.A mmonia vapors have apungent
odor .However, they are neither toxic nor
hazardous to health in this concentration. 144
RefuelingDriving and parking
Display messages Possible causes/consequences and
0004 Solutions
0004
Hood open You are already driving at walking pace, eve
nthough the hood is
not closed.
X Close the hood. 0002
Please enter PIN: You have not yet entered your PIN in the mobile phone.
X
Enter the PIN for the SIM card. 0004
Doors open You are already driving at walking pace, even though not all the
doors are closed.
X
Close the doors. 000F
Check wash. fluid
level The washer fluid level is too low.
X
Add washer fluid (Y page 246).Key
Display messages Possible causes/consequences and
0004 Solutions
0005
Replace key Visit
workshop The key is no longer working.
X
Visit a qualified specialist workshop. Indicator and warning lamps in the instrument cluster
G
WARNING
If maintenance work is carried out incorrectly, the operating safety of your vehicle may be
affected. This could cause you to lose control of your vehicle and cause an accident. Moreover,
the safety systems may no longer be able to protect you or others as they are designed to do.
Always have service work carried out at a qualified specialist workshop. Indicator and warning lamps in the instrument cluster
209On-board computer and displays Z
Problem Possible causes/consequences and
0004 Solutions
000F
The yellow
washer fluid
level indicator
lamp for the
windshield
washer/
headlamp
cleaning system
is lit after the
engine is started
or while the
vehicle is in
motion. The water level is too low.
X
Add washer fluid (Y page 246). 0014
If you turn the
key in the
ignition lock to
position 2, the
red seat belt
warning lamp
lights up for
approximately
6s econds. The warning lamp is to remind you to fasten your seat belt.
X
Fasten seat belt (Y page 48). 0002
When the key is
turned to
position 2in the
ignition lock, the
yellow bulb
warning lamp
lights up. One of the exterior lighting bulbs is faulty, with the exception of
the perimeter lamps and the trailer lighting.
i
Depending on the equipment, the bulb failure indicator can fail
for all lamps with the exception of the turn signal lamps.
X Replace the faulty bulb as soon as possible (Y page 96).0004
The yellow "door
open" indicator
lamp is lit while
driving. The vehicle is moving without all doors or the hood being closed.
X
Close the doors or hood. 0004
The yellow "door
open" indicator
lamp is lit. The electrical step has retracted or extended only partially or not
at all.
X Make sure there is sufficien tfree space for the electrical step.
X Open or close the sliding door again.
X If the electrical step still does not extend or retract fully, push
the step in manually (Y page 72). Before stepping out, remind
the passengers that the step is missing. Indicator and warnin
glamps in the instrument cluster
219On-board computer and displays Z
Useful information
This Operator's Manual describes all models
as well as standard and optional equipment
of your vehicle that were available at the time
of going to print. Country-specific variations
are possible. Note that your vehicle may not
be equipped with all of the described
functions. This also applies to systems and
functions relevant to safety.
Read the information on qualified specialist
workshops (Y page 26). Engine compartment
Hood
Opening the hood G
WARNING
If the hood is unlatched, it may open up when
the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. G
WARNING
Opening the hood when the engine is
overheated or when there is a fire in the
engine compartmen tcould expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department. G
WARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of the exhaust system, can become
very hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following. G
WARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There
is a risk of injury.
If you need to do any work inside the engine
compartment,
R switch off the ignition
R never reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
R keep clothing away from moving parts G
WARNING
The fuel injection system operates with a high
voltage. If you touch the live components, you
could receive an electric shock. There is a risk
of injury.
Never touch components of the fuel injection
system when the ignition is switched on.
The live components of the fuel injection
system are, for example, the injectors.
! Make sure that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield
wipers or the hood. Hood release lever in the driver's footwell
X
Stop your vehicle as far away from traffic
as possible on level ground.
X Switch off the engine. 240
Engine compartmentMaintenance and care
X
Secure the vehicle to prevent it from rolling
away.
X Pull release handle 0005on the hood.
The hood is released. X
Reach into the gap and push grip 0006on the
hood catch upwards. X
Swing the hood upwards unti lsuppor tstrut
0026 engages and the hood is supported.
Closing the hood G
WARNING
If the hood is unlatched, it could tip forward
during rapid deceleratio nofthe vehicle and
hit persons or objects within its path. There is
a risk of an accident and injury.
Therefore, always make sure that the hood is
closed and locked completely before driving
off. If the hood is not locked and you are already
driving at walking pace:
R
the yellow 0004indicator lamp in the
instrumentc luster goes on for vehicles
without steering-wheel buttons.
R the 0004 Hood open display appears for
vehicles with steering-wheel buttons.
! When you press the support strut back,
make sure that you do not press it against
the detent position and cause it to bend.
! Do not use your hands to push the hood
down. You could damage it otherwise.
X Lift the hood slightly.
X Press support strut 0026towards the back.
X Lower the hood and allow it to fall with
momentum fro maheight of approximately
1 ft (30 cm).
The hood locks audibly.
X Check that the hood is correctly locked.
If the hood can be raised slightly, it is not
properly engaged.
i If the hood is not correctly engaged, open
the hood again. Let the hood fall with a little
more momentum. Overview of the engine compartment
0005
Coolant expansion tank cap
(Ypage 244)
0006 Diesel Exhaust Fluid (DEF) filler neck
cap 3
(Y page 143)
0026 Engine oil filler neck cap (Y page 242)
3 Only on Cargo Vans/Passenger Vans. Engine compartment
241Maintenance and care Z
Engine
oil Add
1.0quart X
Add the amount of oil
shown (Y page 244).
X Check the engine oil level
againa fter a few minutes. Engine
oil Add
1.5quart
Engine
oil Add
2.0quart
Engine
oil level
Reduce
oil level The oil level is too high.
X
Have excess oil removed. Eng. oil
lev. Turn
ignition
on for
level X
Turn the key to
position 2in the ignition
lock. Observe
wait.
period X
Repeat the engine oil
measurement after about
5 minutes if the engine is
at normal operating
temperature.
X Repeat the engine oil
measurement after about
30 minutes if the engine
is not at normal operating
temperature. Engine
oil level
Not when
eng.
running X
Switch off the engine and
wait for approximately
5 minutes if the engine is
at normal operating
temperature. Then,
perform the engine oil
measurement. Measurement units in the display:
R
qts USA only
R ltr Canada only Checking the oil level using the oil
dipstick
For vehicles with a red oil dipstick, only check
the oil level whe
nthe engine is at normal
operating temperature:
X Stop your vehicle as far away from traffic
as possible on level ground.
X Secure the vehicle to prevent it from rolling
away.
X Switch off the engine.
X Wait for five minutes.
For vehicles with a yellow oil dipstick, only
check the oil level when the engine is cold.
X Stop your vehicle as far away from traffic
as possible on level ground.
X Secure the vehicle to prevent it from rolling
away.
X Open the hood (Y page 240).
X Pull out oil dipstick 0005.
X Wipe oil dipstick 0005using a lint-free cloth. Engine compartment
243Maintenance and care Z
X
Insert oil dipstick 0005back into the guide
tube as far as it will go and remove it again.
If the level is between minimum mark 0026
and maximum mark 0006, the oil level is
correct.
X If the oil level has droppe dto or below
minimum mark 0026, open cap0025and add
engine oil (Y page 244).
The difference in quantity between
marks 0006and 0026is approximately
2 US quarts (2 l).
X Close the hood.
OM651 4-cylinder diesel engine:
At outside temperatures between 32 ‡
(–0 †) and 86 ‡(30 †) you can measure the
oil level whe ncold.
Measuring the engine oil when the engine is
cold is less precise than measuring when the
engine is at normal operating temperature.
When the appropriate warning is shown in the
display
X Adding engine oil (Y page 244)
Or
X Have engine oil siphoned off.
Adding engine oil G
WARNING
If engine oil comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next
to the filler neck. Let the engine cool down
and thoroughly clean the engine oil off the
components before starting the engine.
! The alternator is located below the engine
oil filler neck.Ife ngine oil spills onto the
alternator, there is a dange rofalternator
damage. Be very careful when adding
engine oil. H
Environmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Do not add too much oil. adding too much
engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off.
! Do not use any additives in the engine oil.
This could damage the engine.
X Open the hood (Y page 240).
X Unscrew and remove cap 0025.
X Add engine oil.
X Place cap 0005on the filler nec kand tighten.
Whe ndoing so, make sure that the cap
engages correctly.
X Check the oil level with the oil dipstick
(Y page 243) or on the display
(Y page 242).
X Close the hood. Coolant
G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
Only check the coolant level and/or fill the
coolant if the vehicle is on a level surface and
the engine has cooled down. The coolant
temperature must be below 122 ‡ (50 †).
! Check the engine cooling and heating
system regularly for leaks.
If a large quantity of coolant is lost, have
the cause traced and rectified at a qualified
specialist workshop. 244
Engine compartmentMaintenance and care
G
WARNING
Coolant contains glycol and is therefore toxic.
Do not swallow the coolant. See a doctor
immediately if you swallow coolant.
Make sure that coolant does not come into
contact with skin, eyesorc lothing. In case of
contac twith eyes, rinse immediately with
plenty of clean water .Clean affected areas of
skin and clothing with soap and water
immediately. Change any affected clothing
immediately. G
WARNING
If antifreeze comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Let the engine cool down before you add
antifreeze. Make sure that antifreeze is not
spilled nex tto the filler neck.T horoughly
clean the antifreeze from components before
starting the engine.
! Take care not to spill any coolant on
painted surfaces. You could otherwise
damage the paintwork. Example: cap and coolant expansion tank
Checking the coolant level
X
Stop your vehicle as far away from traffic
as possible on level ground.
X Switch off the engine.
X Secure the vehicle to prevent it from rolling
away.
X Open the hood (Y page 240). X
Slowly turn cap 0005half a turn counter-
clockwise to allow excess pressure to
escape.
X Turn cap 0005further and remove it.
X Check the coolant level.
If the coolant reaches the maximum mark
on coolant expansion tank 0006, there is
enough coolant in coolant expansion
tank 0006.
Adding coolant
X If the coolant drops under the minimum
mark on coolant expansion tank 0006, add
coolant to the maximum mark.
Observe the information on coolant
mixture ratio and water quality in the
"Technical data" section (Y page 324). To
prevent damage to the engine cooling
system, use only approved corrosion
inhibitor/antifreeze that comply with the
Mercedes-Benz Specifications for Service
Products.
X Replace cap 0005and turn it clockwise to
tighten.
X Start the engine.
X After approximately 5minutes, switch off
the engine and allow it to cool down.
X Check the coolan tlevel again and add
coolant if necessary.
X Close the hood. Brake fluid
G
WARNING
Brake fluid is hazardous to health. Do not
swallow brake fluid. See adoctor immediately
if you swallow brake fluid.
Make sure that brake fluid does not come into
contact with skin, clothing or eyes. Rinse
affected areas with plenty of clean water and
consult a doctor if necessary.
Always wear gloves and eye protection when
topping up brake fluid. Engine compartment
245Maintenance and care
Z